v-bind with empty key

[andrewharvey]

Version

2.6.11

Reproduction link

https://jsfiddle.net/andrewharvey4/k6r3uzby/10/

Steps to reproduce

v-bind an object with a empty string key

What is expected?

vue not to crash, it to either be silently ignored or a warning but not a fatal error

What is actually happening?

an error is thown crashing the app

vue.js:4483 Uncaught DOMException: Failed to execute 'setAttribute' on 'Element': '' is not a valid attribute name.
    at baseSetAttr (https://unpkg.com/vue@2.6.11/dist/vue.js:6778:10)
    at setAttr (https://unpkg.com/vue@2.6.11/dist/vue.js:6753:7)
    at Array.updateAttrs (https://unpkg.com/vue@2.6.11/dist/vue.js:6708:9)
    at invokeCreateHooks (https://unpkg.com/vue@2.6.11/dist/vue.js:6064:24)
    at initComponent (https://unpkg.com/vue@2.6.11/dist/vue.js:5997:9)
    at createComponent (https://unpkg.com/vue@2.6.11/dist/vue.js:5980:11)
    at createElm (https://unpkg.com/vue@2.6.11/dist/vue.js:5920:11)
    at createChildren (https://unpkg.com/vue@2.6.11/dist/vue.js:6048:11)
    at createElm (https://unpkg.com/vue@2.6.11/dist/vue.js:5949:11)
    at Vue.patch [as __patch__] (https://unpkg.com/vue@2.6.11/dist/vue.js:6509:11)

[elshuku]

Exact same error is given when v-bind has an extra : infront of it
<my-comp v-bind:={prop1, prop2}> My Comp </my-comp>

This is picked during run-time instead of compile with stack trace and message having no information about where it happened.

Not sure if it's worth re-opening this, or creating another issue.

This happens in 2.6.11